What did they fight about? No one except the people in the elevator know for sure, but that didn't stop Twitter from coming up with a few theories of their own. It didn't take long for #WhatJayZSaidToSolange to skyrocket. Take a look at some of our favorite posts.

Here's a look at Jay-Z and Beyonce, as they attend the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City. This is the same night as the infamous fight with Solange. Take a look to see who else was at the event.

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Charlize Theron and Sean Penn attend the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

Actress Emmy Rossum attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

Photo By Dimitrios Kambouris/Getty Images

Designer Tom Ford attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

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Actress Allison Williams attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

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Model Rosie Huntington-Whiteley attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

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Nicole Richie attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

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Chiwetel Ejiofor and Sari Mercer attend the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

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Katie Couric attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

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Actress Diane Kruger attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

Photo By Dimitrios Kambouris/Getty Images

NEW YORK, NY - MAY 05: Lake Bell attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City. (Photo by Dimitrios Kambouris/Getty Images)

Photo By Dimitrios Kambouris/Getty Images

Actor Matt Bomer attends the "Charles James: Beyond Fashion" Costume Institute Gala at the Metropolitan Museum of Art on May 5, 2014 in New York City.

UPDATE: While no one truly knows the reason for the fight between Solange and Jay Z except for the people in the elevator, there has been speculation all over the internet as to what caused the brawl. (Check out our favorites from the comical @WhatJayZSaidtoSolange posts on Twitter in the gallery above.)

TMZ reports that the incident went down during the Met Gala last week at the Standard Hotel in New York City. (See which other stars attended the event also in the gallery above.)

In the video, you can see a woman kicking and swinging her arms at a man who appears to be Jay Z. This wasn't a private altercation. There were other people inside the elevator; one of whom tried to hold the woman back. But this girl is a feisty one and was able to get a few more licks in before the doors opened.

Fast forward to the end of the night. TMZ posted video of Beyonce and Jay Z leaving the gala like nothing had happened, while a very visibly upset Solange hopped in the same car as her famous sister. Jay Z, on the other hand, grabbed a different ride. Smart move.